Motor for rotary machines.



s. B, LAND) L L. MONTEVERDE.

MOTOR FOR ROTARY MACHINES.

APPLICATION FILED DEC-16,1912.

A Patented Jan. 25, 1916.

F/c-s.

@ ugr/mmm M WM THB CULUMBIA PLANOGRAPH C0., WASHINGTON, D. C.

sILvIoB. mirino ANDLUIGI Moivrnvnnnn, or cannon, ITALY.

MOTOR r ROTARY MACHINES.

Intensa.

Specicaton of Letters Patent.

Patented aan. 25, raie.

Application alexa Detente; 1a 1912. serial NQ. 737,006.

To all 107mm t may concern Be it known that we, SILvIo B. LAND and LUIGIMoNTnvnRDE, subjects yof the King of Italy7 residing at Genoa, in theKingdom ot' Italy, have invented new and useful Improvements in Motors'for Rotary Machines, ol which the following a specification.

This invention relates to rotary motors of the compressed air driventype which are commonly used in boring and drilling machines ot theportable variety.`

The principal object of the invention is to improve and simplify thegeneral construction of devices of this character.

Another object of the inventionis to provide a device of this characterwherein the parts will be readily accessible in order that the machinemay be taken apart for cleaning or repairs and the several parts quicklyreplaced when it is desired to assemble the same. y

IV 1th the above and other objects In view the invention consists ingeneral of certain novel details ot construction andy combination ofparts hereinafter fully described, illustrated in the accompanying'drawings, and speciiically claimed.

In the accompanying drawings, like characters` of reference indicate thelike parts in the several views, and i-Figure 1 is a vertical transversesection through a machine constructed in accordance with this invention.Fig. 2 is a cross section on line IIVII of Fig. 1. Fig. 3 is a-bcttomplan view ot' the valve casing.

In carrying o-ut this invention there is` provided the body 10 which hasformed therein a chamber 11 from whence extends a downwardly projectingneck 12. Within the chamber 11 and neck 12 is a bushing. 18 forming thelining for the chamber and a bearing in the neck. The rotor 14 of themotor is mounted in the chamber 11 and from each end of this rotorprojects a journal 15. Thelower journal 15 is fitted within the bushing13 `extending into the neck 12 while the upper journal 15 of said rotoris fitted into a bushing 16 carried in a cover plate 17 securely lixedupon the upper end of the casing and closing the upper end of thechamber 1l. Adjacent the chamber 11 the casing is provided with atubular portion 18 and on the lower end of the casing or bottom of saidcasing is litted a bottom piece 19 which has therein an opening 20alined with the axis of the rotor of the motor. TNithin this opening 20is screwed a foot step bearing 21 so arrangedthat an extension 22 uponthe journal of the motor which projects downwardly through the neck 12can rest thereon and thus prevent longitudinal movement of said rotor.

`lVithin the tubular portion 18 is mounted a bushing 23 and alined withthe tubular portion 18 is a tubular portion 24 formed on the bottomplate and also provided with a bushing 25. Slidably and rotatablymounted inthe bushings 28 and 25 is a tool socket 26 of the usual form.At 27 is indicated a feed screw sleeve and this ieed screw sleeve has alower end 28 which passes through a suitable opening in the cover plate17 and is screwed into the tubular portion 18. Between the feed screwsleeve and the bushing 28 are mounted the anti-friction washers 29 whichare kept separate by means of the ball. bearings 8O. Screwed into thesleeve 27 is a hollow feed screw 31 having a closed upper end. Thisclosed upper end is indicated at 32 and it is provided with an upwardlyextending center point 33 to enable it to be held beneath the upper armof what is commonly called old man Extending into the hollow lportion ofthe feed screw is a stem 84 the lower end of which extends into thesocket 35 provided; in the tool socket 26. Fixed on the solid end 32 isan operating handle 36 and when this handle is rotated it carries withit the feed screw and consequently causes movement of said screw alongthe sleeve 27 so that the stem 84 is carried down or allowed to moveupfaccording to the direction of the revolution ofthe feed screw,

and thereby forced the tool,fcarried in the socket 26, into the work orpermits its removal from the work. Extending laterally fromthe casing 10is a tubular member 37 wherein is screwed a handle 38 so that the deviceproperly handled in transporting it from place to place and in placingit in position for work.

Between the portions 15 and 22 of the motor extension is provided ashaft 39 whereon is mounted a pinion 40. This pinion 40 meshes with agear 41 splined to the sleeve 26 so that while the gear causes thesleeve to revolve yet the sleeve can move longitudinally through thegear, the latter being held in position between the two tubular portions18 and 24.

The motor 14 is of the reversible type but it is not deemed necessaryhere to show any of the particular mechanism involved in the motor otherthan the reversing valve. This reversing valve is held in a tubularextension 42 arranged opposite the tubular niember 37 and includes avalve casing 43 or" frusto-conical form and having ribs 44 formedthereon to hold the valve casing in proper spaced relation and toprovide inlet and outlet ports 43 and 44 communicating with the motor.This casing is furthermore provided with a port 45 which communicateswith a nipple 46 extending through the tubular portion 42 so that an airhose may be attached thereto for a sup- `ply or' the compressed air.Vithin this valve casing is mounted a rusto-conical plug valve 47 havinga partition 48 extending-thereacross and on one side of the partitionare provided the ports 49 while on the other side Vci' the partitionareV provided similar V ports 50. On the last mentioned side of thepartition 48 there is also provided an exhaust port '51 ywhich extendsthrough the hub 52 o" 'said valve and leads into a sleeve 53 which isheld inv position in a bushing 54 by a second bushing 55 as clearlyshown in Fig. l. This sleeve is pro vided with a lrnurled handle 56 andhas at the end of it a tap 57 having a series oli' small perforations 58yformed therein sov that the cap constitutes a mulier. Within the sleeveis formed a diaphragm 59 having an opening 60 in the center thereof andbef vtween this diaphragm and the valve is held a coiled spring 6l whichnormally holds the valve close in the casing 48. Now it will be obviousthat by rotating the valve from the position shown in Fig. 2 throughone-quarter of a circle the port 43 will be cut out of communicationwith nipple and the port 44 cut in. At the same time the portV 44 willbe placed in communication with the opposite side of the partition 48and thus the port 48 becomes the exhaust porty where formerly it was theintake port. It will also be obvious that upon removal of the sleeve 27the kcover plate 17 can be readily Copies of this patent may be obtainedfor five cents eachLby addressing the f Commissioner of Patentsl takenoli and access had to the motor and all the parts connected therewith.Iny like manner upon removal of the nipple 46 and sleeve 54 the entirevalve mechanism can readily be withdrawn for inspection or repairs.Furthermore upon removing the bottom plate 19 the lower part of thedevice is accessible. VThus any part of the device can be readilyreached for the purpose of replacement or repair. Y

' There has thus been provided a simple and efficient device of the kinddescribed and of the character speciiied.

`- It will be obvious that many minor changes may be made in the forniand construction of this invention without departing from the materialprinciples thereof. It is not therefore desired to confine-the inventionto the exact form herein shown and described, but it iswished to includeall such as come properly within the scope claimed.

Having thus described the invention, what is claimed as new, is:

ln a motor of the character described, a casing having a tubularextension, a valve casing mounted in said extension and provided withribs to form inlet and exhaust passages between the casing andextension, said extension having a supply opening and said casinghaviuga similar supply opening registering therewith, said casingfurther having ports communicating withsaid passages, a hollow plugvalve revolubly mounted in said casing and provided with a diametricallydisposed partition'arranged to divide4 the vvalve into two chambers,saidvalve further having a pair oi' ports leading trom each chamber andarranged to bring either of the ports in the casing into communicationwith the supply opening, and said valve further having a third portconstituting an exhaust port leading from one of said chambers, andmeans for rotating said valve.

ln testimony whereof we yalix our signatures. srLvIo B. LANDo.

LUIGI MoNTEvER-DE.

Washington, D. C.

